On Thu, 8 Oct 2009 19:57:51 -0400, Don Kessler <email@example.com> wrote:
>>From a conceptual perspective -- especially at VHF, I think the capacitive
>coupling between cathode and filament could be significant. Why shunt
>cathode drive to ground via the filament?
Very little shunting to ground will be taking place. The capacitance merely
becomes part of the tuned input circuit.
Having said that however, I agree with others that a filament choke should be
used but for the other reasons they have stated.
73, Bill W6WRT
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